After I installed Google Drive Backup, I encountered this error. My operating system is CentOS 7.x. However, when I installed it on Ubuntu 18.04, it still works fine.
ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'OpenSSL 1.0.2k-fips 26 Jan 2017'. See: https://github.com/urllib3/urllib3/issues/2168